Mode refinement algorithm for H.264 intra frame requantization

D Lefol, DR Bull, CN Canagarajah

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

8 Citations (Scopus)
407 Downloads (Pure)


The latest video coding standard H.264 has been recently approved and has already been adopted for numerous applications including HD-DVD and satellite broadcast. To allow interconnectivity between different applications using H.264, transcoding will be a key factor. When requantizing a bit stream the incoming coding decisions are usually kept unchanged to reduce the complexity, but it can have a major impact on the coding efficiency. This paper proposes a novel algorithm for mode refinement of intra prediction in the case of requantization of H.264 intra frames. The proposed approach gives a comparable quality to a full search for a fraction of its complexity by exploiting the statistical properties of the mode distribution.
Translated title of the contributionAn efficient complexity-scalable video transcoder with mode refinement
Original languageEnglish
Title of host publication2006 IEEE International Symposium on Circuits and Systems, 2006 (ISCAS 2006) Kos, Greece
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages4459 - 4462
Number of pages4
ISBN (Print)0780393899
Publication statusPublished - May 2006
EventInternational Symposium on Circuits and Systems, 2006 - Kos, Greece
Duration: 21 Jan 200624 Jan 2006


ConferenceInternational Symposium on Circuits and Systems, 2006

Bibliographical note

Rose publication type: Conference contribution

Sponsorship: The work is funded by 3CRL ROAM4G.

Terms of use: Copyright © 2006 IEEE. Reprinted from IEEE International Symposium on Circuits and Systems, 2006 (ISCAS 2006).

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